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  <title>Returns part of haystack string from the first occurrence of needle to the end of haystack</title>
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 <body class="docs"><div id="layout">
  <div id="layout-content"><div id="function.grapheme-strstr" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">grapheme_strstr</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.3.0, PHP 7, PECL intl &gt;= 1.0.0)</p><p class="refpurpose"><span class="refname">grapheme_strstr</span> &mdash; <span class="dc-title">Returns part of haystack string from the first occurrence of needle to the end of haystack</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.grapheme-strstr-description">
  <h3 class="title">说明</h3>
  <p class="para">过程化风格</p>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>grapheme_strstr</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$haystack</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$needle</code></span>
   [, <span class="methodparam"><span class="type">bool</span> <code class="parameter">$before_needle</code><span class="initializer"> = <strong><code>FALSE</code></strong></span></span>
  ] ) : <span class="type">string</span></div>

  <p class="para rdfs-comment">
   Returns part of haystack string from the first occurrence of needle to the end of haystack (including the needle).
  </p> 
 </div>


 <div class="refsect1 parameters" id="refsect1-function.grapheme-strstr-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">haystack</code></dt>

     <dd>

      <p class="para">
       The input string. Must be valid UTF-8. 
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">needle</code></dt>

     <dd>

      <p class="para">
       The string to look for. Must be valid UTF-8. 
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">before_needle</code></dt>

     <dd>

      <p class="para">
       If <strong><code>TRUE</code></strong>, grapheme_strstr() returns the part of the
       haystack before the first occurrence of the needle (excluding the needle).
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

   
 
 <div class="refsect1 returnvalues" id="refsect1-function.grapheme-strstr-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns the portion of string, or FALSE if needle is not found.   
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-function.grapheme-strstr-examples">
  <h3 class="title">范例</h3>
  <div class="example" id="example-3100">
   <p><strong>Example #1 <span class="function"><strong>grapheme_strstr()</strong></span> example</strong></p>
   <div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />$char_a_ring_nfd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"a\xCC\x8A"</span><span style="color: #007700">;&nbsp;&nbsp;</span><span style="color: #FF8000">//&nbsp;'LATIN&nbsp;SMALL&nbsp;LETTER&nbsp;A&nbsp;WITH&nbsp;RING&nbsp;ABOVE'&nbsp;(U+00E5)&nbsp;normalization&nbsp;form&nbsp;"D"<br /></span><span style="color: #0000BB">$char_o_diaeresis_nfd&nbsp;</span><span style="color: #007700">=&nbsp;</span><span style="color: #DD0000">"o\xCC\x88"</span><span style="color: #007700">;&nbsp;</span><span style="color: #FF8000">//&nbsp;'LATIN&nbsp;SMALL&nbsp;LETTER&nbsp;O&nbsp;WITH&nbsp;DIAERESIS'&nbsp;(U+00F6)&nbsp;normalization&nbsp;form&nbsp;"D"<br /><br /></span><span style="color: #007700">print&nbsp;</span><span style="color: #0000BB">urlencode</span><span style="color: #007700">(</span><span style="color: #0000BB">grapheme_stristr</span><span style="color: #007700">(&nbsp;</span><span style="color: #0000BB">$char_a_ring_nfd&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$char_o_diaeresis_nfd&nbsp;</span><span style="color: #007700">.&nbsp;</span><span style="color: #0000BB">$char_a_ring_nfd</span><span style="color: #007700">,&nbsp;</span><span style="color: #0000BB">$char_o_diaeresis_nfd</span><span style="color: #007700">));<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
   </div>

  </div>
  <p class="para">以上例程会输出：</p>
  <div class="example-contents screen">
<div class="cdata"><pre>
o%CC%88a%CC%8A
</pre></div>
  </div>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.grapheme-strstr-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="grapheme_stristr.html" class="function" rel="rdfs-seeAlso">grapheme_stristr()</a> - Returns part of haystack string from the first occurrence of case-insensitive needle to the end of haystack</span></li>
    <li class="member"><span class="function"><a href="grapheme_stripos.html" class="function" rel="rdfs-seeAlso">grapheme_stripos()</a> - Find position (in grapheme units) of first occurrence of a case-insensitive string</span></li>
    <li class="member"><span class="function"><a href="grapheme_strpos.html" class="function" rel="rdfs-seeAlso">grapheme_strpos()</a> - Find position (in grapheme units) of first occurrence of a string</span></li>
    <li class="member"><span class="function"><a href="grapheme_strripos.html" class="function" rel="rdfs-seeAlso">grapheme_strripos()</a> - Find position (in grapheme units) of last occurrence of a case-insensitive string</span></li>
    <li class="member"><span class="function"><a href="grapheme_strrpos.html" class="function" rel="rdfs-seeAlso">grapheme_strrpos()</a> - Find position (in grapheme units) of last occurrence of a string</span></li>
    <li class="member">
     <a href="http://unicode.org/reports/tr29/#Grapheme_Cluster_Boundaries" class="link external">&raquo;&nbsp;
      Unicode Text Segmentation: Grapheme Cluster Boundaries
     </a>
    </li>
   </ul>
  </p>
 </div>

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